Phillip Davis found night-zookeeper:

• Moderately improves teaching efficiency and productivity“I can allow students to work at their own pace on a given task/assignment freeing me up to intervene with struggling students.”
• Moderately improves behaviour or wellbeing“Engaged students are better behaved and Night Zookeeper keeps most kids engaged.”
• Slightly improves attainment“I don't have enough data to give a well considered answer. ”
• Does not significantly increase student collaboration“My students are often too shy to comment on one another's work. Additionally, they lack the writing skills to know what to comment on constructively. ”
• Moderately reduces attainment gap“Targeted skill lessons ”